package Observe;

public class Demo {
    public static void main(String[] args) {
        NumberObServable numberObServable=new NumberObServable();
        BinaryObserver binaryObserver=new BinaryObserver(numberObServable);
        OctalObserver octalObserver=new OctalObserver(numberObServable);

        numberObServable.notifyChange();
    }
}
